US5791793A - Thermal printhead and protection cover mounted on the same - Google Patents

Thermal printhead and protection cover mounted on the same Download PDF

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Publication number
US5791793A
US5791793A US08/860,971 US86097197A US5791793A US 5791793 A US5791793 A US 5791793A US 86097197 A US86097197 A US 86097197A US 5791793 A US5791793 A US 5791793A
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United States
Prior art keywords
head substrate
edge
protection cover
cover
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/860,971
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English (en)
Inventor
Takaya Nagahata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7312099A external-priority patent/JPH09150537A/ja
Priority claimed from JP31773095A external-priority patent/JPH09156145A/ja
Application filed by Rohm Co Ltd filed Critical Rohm Co Ltd
Assigned to ROHM CO., LTD. reassignment ROHM CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAGAHATA, TAKAYA
Application granted granted Critical
Publication of US5791793A publication Critical patent/US5791793A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads
    • B41J2/33505—Constructional details
    • B41J2/3352—Integrated circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads
    • B41J2/33555—Structure of thermal heads characterised by type
    • B41J2/3357—Surface type resistors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads
    • B41J2/33575—Processes for assembling process heads

Definitions

  • the present invention relates to a thermal printhead and a protection cover mounted on the same.
  • a typical thermal printhead includes an insulating head substrate formed with a heating resistor and drive ICs for actuating the heating resistor.
  • the head substrate is mounted on a supporting member which is made of aluminum for example and has good thermal conductivity.
  • a narrow strip-like heating resistor is formed on a substrate by a thick film printing method.
  • the narrow strip-like heating resistor is longitudinally sectionalized into tiny regions to provide heating dots.
  • These heating dots are electrically connected, via a plurality of individual electrodes, to output pads of drive ICs. Further, the heating dots are equally connected to a common electrode.
  • Each output pad of a drive IC is connected to an individual electrode by a bonding wire.
  • the drive ICs and the bonding wires are enclosed by a hard protection coating made of a thermosetting resin such as an epoxy resin for example.
  • Main functions of the protection coating are to protect the drive ICs and wire-bonded portions from external mechanical forces and to prevent static electricity from destroying the drive ICs.
  • the reason such a preventive measure is necessary to be taken for the drive ICs is that the static electricity, which is generated on the recording paper due to the sliding contact between the recording paper and the heating resistor during printing operation, may be discharged to the drive ICs and destroy them.
  • a protection cover may be additionally provided for covering a protection coating which encloses drive ICs and bonding wires.
  • a protection cover prevents the electrostatically charged recording paper from coming into direct contact with the protection coating.
  • a thermal printhead including an insulating head substrate having a first edge and a second edge opposite to the first edge, a heating resistor formed on the head substrate along the first edge, at least one drive IC mounted on the head substrate along the second edge, and a protection cover mounted for covering the drive IC.
  • the protection cover includes a cover member for covering the drive IC and a fixation member formed integrally with the cover member.
  • the fixation member has a positioning wall coming into direct contact with the second edge of the head substrate.
  • the fixation member is designed to attach the protection cover to the head substrate without utilizing separate fixing means.
  • the fixation member of the protection cover is made in a form of a channel groove having a pair of elastically deformable clip pieces projecting from the positioning wall toward the head substrate.
  • a minimum distance between the clip pieces in an original state is set to be smaller than a thickness of the head substrate so that the second edge of the head substrate is clipped by the clip pieces.
  • the protection cover of the above embodiment is attached to the head substrate, unlike the prior art wherein a supporting member or printed circuit board for external connection is utilized for attachment.
  • a supporting member or printed circuit board for external connection is utilized for attachment.
  • the transferring path for recording paper in the printing unit utilizing a thermal printhead is mainly determined by a platen arranged in facing relation to the heating resistor on the head substrate.
  • the position of the platen should be determined based on that of the heating resistor on the head substrate in particular.
  • the position of the cover member of the protection cover is determined relative to the head substrate.
  • the cover member it is easy to perform an ideal and accurate positioning of the cover member relative to the transferring path of the recording paper.
  • the projection length of the cover member can be maximized so that the protection cover properly and fully serves to protect the drive ICs and guide the recording paper.
  • one of the clip pieces has a flat contact surface held in surface contact with an obverse surface of the head substrate, while the other clip piece has a convexly curved portion held in contact with a reverse surface of the head substrate.
  • the head substrate is mounted on an electrically conductive supporting member having a high thermal conductivity
  • the protection cover is electrostatically conductive
  • a portion of the fixation member of the protection cover contacts the supporting member.
  • the protection cover may be integrally formed by a carbon-containing synthetic resin to provide an electrostatic conductivity.
  • the head substrate is mounted on an electrically conductive supporting member having a high thermal conductivity
  • the fixation member of the protection cover is made in a form of a frame which includes an engaging front wall coming into engagement with an edge of the supporting member adjacent to the heating resistor, and a pair of side walls connecting the engaging front wall to the positioning wall.
  • the cover member of the protection cover is accurately positioned relative to the head substrate by the positioning wall.
  • the positioning wall preferably includes a step portion engaging the obverse surface of the head substrate adjacent the second edge of the head substrate.
  • the drive ICs on the head substrate are enclosed by a hard protection coating, while the cover member of the protection cover, which is elastically deformable, comes into elastic contact with the protection coating.
  • the cover member of the protection cover is always held in elastically close contact with the hard protection coating enclosing the drive ICs. Therefore, it is possible to advantageously prevent a transfer error of the recording paper, which otherwise might be caused by the recording paper entering a clearance between the cover member and the protection coating.
  • a protection cover mounted on a thermal printhead including an insulating substrate having a first edge and a second edge opposite to the first edge, a heating resistor formed on the head substrate along the first edge, and at least one drive IC disposed on the head substrate along the second edge.
  • the protection cover including a cover member for covering the drive IC, and a fixation member formed integrally with the cover member.
  • the fixation member has a positioning wall coming into direct contact with the second edge of the head substrate.
  • the fixation member is attached to the head substrate without utilizing separate fixing means.
  • FIG. 1 is a cross-sectional view showing a thermal printhead according to a first embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the same thermal printhead
  • FIG. 3 is an enlarged plan view showing a heating portion of the same thermal printhead
  • FIG. 4 illustrates the same thermal printhead in operation
  • FIG. 5 is a cross-sectional view showing a thermal printhead according to a second embodiment of the present invention.
  • FIG. 6 illustrates the thermal printhead shown in FIG. 5 in operation
  • FIG. 7 is a cross-sectional view showing a thermal printhead according to a third embodiment of the present invention.
  • FIG. 8 is an exploded perspective view of the same thermal printhead
  • FIG. 9 illustrates the thermal printhead shown in FIG. 7 in operation.
  • FIG. 10 is a cross-sectional view showing a thermal printhead according to a fourth embodiment of the present invention.
  • FIGS. 1-3 show a thermal printhead according to a first embodiment of the present invention.
  • the thermal printhead according to the first embodiment which is generally indicated by reference numeral 10, has a basic structure similar to that of a typical thick film-type thermal printhead.
  • the thermal printhead 10 includes an elongated rectangular head substrate 11 made of an insulating material such as alumina-ceramic.
  • the upper surface of the head substrate 11 is formed with a heating resistor 12 and drive ICs 13 for actuating the heating resistor 12.
  • the heating resistor 12 is formed into a narrow strip extending along the first edge 11a of the head substrate 11 by a thick film printing method using a resistor paste such as ruthenium oxide paste.
  • the upper surface of the head substrate 10 is formed with a common electrode 14 between the first longitudinal edge 11a and the heating resistor 12. As fully shown in FIG. 3, the common electrode 14 has comb-tooth portions 14a extending under the heating resistor 12.
  • the upper surface of the head substrate 10 is also formed with a comb-teeth like individual electrodes 15 extending under the heating resistor 12.
  • the respective regions of the heating resistor 12 which are sectionalized by adjacent comb-tooth portions 14a of the common electrode 14 function as heating dots 16.
  • the drive ICs 13 are linearly arranged along the second longitudinal edge 11b of the head substrate 11.
  • the respective individual electrodes 15 extend toward the second longitudinal edge 11b of the head substrate 11 for connection to corresponding output pads (not shown) of the drive ICs 13 via bonding wires 17a.
  • Power pads (not shown) and signal pads (not shown) of the drive ICs 13 are also connected, via bonding wires 17b, to a predetermined wiring pattern (not shown) formed on the head substrate 11.
  • the linearly arranged drive ICs 13 together with the bonding wires 17a, 17b for electrical connection are enclosed by a hard protection coating 18.
  • the protection coating 18 is made of a thermosetting resin such as an epoxy resin for example. Specifically, the resin in a liquid state is applied to enclose the drive ICs 13 and then cured under heating.
  • the head substrate 11 is attached to the supporting member 19 via an adhesive for example. At this time, the head substrate 11 is attached to the supporting member 19 so that a predetermined distance L is provided between a longitudinal edge 19a of the supporting member 19, which is adjacent to the first longitudinal edge 11a of the head substrate 11, and the heating resistor 12. Thus, the heating resistor 12 of the head substrate 11 is positioned with fairly great accuracy relative to the longitudinal edge 19a of the supporting member 19.
  • the drive ICs 13 are covered by the protection coating 18 as well as the protection cover 20.
  • the protection cover 20 includes a channel groove-shaped fixation member 21 held in clipping engagement with the other edge 11b of the head substrate 11, and a cover member 22 extending from the fixation member 21 to cover the upper sides of the drive ICs 13.
  • the protection cover 20 may be integrally produced by extruding a resin for example.
  • the channel groove-shaped fixation member 21 of the protection cover 20 includes a pair of vertically spaced projections of clip pieces 24, 25, which are formed integrally with a vertical positioning wall 23 coming into direct contact with the second longitudinal edge 11b of the head substrate 11.
  • the upper clip piece 24 has a flat contact surface 24a held in close contact with the upper surface of the head substrate 11, while the lower clip piece 25 has an upwardly convex curved portion 25a.
  • the distance L 1 between the contact surface 24a of the upper clip piece 24 and the convex curved portion 25a of the lower clip piece 25 is set to be smaller than the thickness L 2 of the second longitudinal edge 11b of the head substrate 11.
  • the tip 24b of the upper clip piece 24 and the tip 25b of the convex curved portion 25a of the lower clip piece 25 are inclined to each other in an opening manner. Due to this, a guiding function is provided in inserting the head substrate 11 into the channel groove-shaped fixation member 21.
  • the cover member 22 extends from the upper end of the positioning wall 23 in a gentle, upwardly convex manner toward the first longitudinal edge 11a of the head substrate 11 by a predetermined length (long enough to completely cover the drive ICs 13).
  • the cover member 22 of the protection cover 20 extends over the protection coating 18 enclosing the drive ICs 13 so that a clearance is provided above the protection coating. Therefore, instead of adopting a hard material such as an epoxy resin described above, a soft material such as silicon resin may be usable for the protection coating 18.
  • the protection cover 20 is preferably formed by a suitable resin such as polypropylene or ABS resin containing 5-20% of carbon, so that a resistance of about 8-12M ⁇ is provided. In such an instance, the protection cover 20 is electrostatically conductive.
  • the attachment of the protection cover 20 is performed by bringing the channel groove-shaped fixation member 21 into clipping engagement with the second longitudinal edge 11b of the head substrate 11.
  • the clipping operation can be easily performed, since the second longitudinal edge 11b of the head substrate 11 is guided by the flaringly inclining tips 24b, 25b of the respective clip pieces 24, 25 constituting the fixation member 21.
  • the minimum distance L between the two clip pieces 24, 25 in the original state is smaller than the thickness L 2 of the head substrate 11.
  • the two clip pieces 24, 25 are held in clipping engagement with the second longitudinal edge 11b of the head substrate 11 with a proper elastic clipping force. Therefore, the protection cover 20 can be attached to the head substrate 11 with a sufficient holding force without using other fixing means such as screws or an adhesive. As a result, the assembling operation is facilitated remarkably, and adaptation to automatic assembling is easily realized.
  • the positioning of the protection cover 20 relative to the head substrate 11 is performed with great accuracy.
  • the cover member 22 can be positioned with great accuracy relative to the heating resistor 12.
  • the transferring path of the recording paper P in a printing unit utilizing the thermal printhead 10 is basically determined by a platen roller R arranged in facing relation to the heating resistor 12 on the head substrate 11.
  • the position of the platen roller R is determined based on that of the heating resistor 12 on the head substrate 11.
  • the cover member 22 of the protection cover 20 is positioned based on the head substrate 11, as described above. Therefore, it is possible to arrange the cover member 22 at an intended position with great accuracy relative to the transferring path of the recording paper P.
  • the projection amount of the cover member 22 is maximized, thereby maximizing the protecting function for the drive ICs 13 and the guiding function for the recording paper P.
  • the protection cover 20 which is made of a carbon-containing synthetic resin, has an electrical conductivity of a predetermined resistance, and the head substrate 11 is mounted on the electrically conductive supporting member 19 having a high thermal conductivity. Further, the lower clip piece 25 of the fixation member 21 of the protection cover 20 is brought into contact with the supporting member 19. Therefore, the static electricity generated on the recording paper P during e.g. high-speed printing is advantageously conducted to the conductive supporting member 19 via the protection cover 20. Thus, the protection cover 20 is prevented from unduly causing electrical short due to accumulated static electricity.
  • FIGS. 5 and 6 show a thermal printhead according to a second embodiment of the present invention. All the constituting elements except a protection cover of the illustrated embodiment are identical to those of the first embodiment. Therefore the elements are designated by the same reference numerals and a detailed description is not given. Regarding the designation of the constituting elements of the protection cover, a prime (') is added to the reference numerals used for the first embodiment.
  • the protection cover 20' of the second embodiment includes a fixation member 21' having a positioning wall 23' and a pair of clip pieces 24', 25', and a cover member 22' formed integrally with the fixation member.
  • the cover member 22' of the protection cover 20' when mounted on the head substrate 11 is elastically urged to be always held in close contact with the surface of the protection coating 18 enclosing the drive ICs 13.
  • the height of the cover member 22' in an original state need be set smaller than the height of the protection coating 18 enclosing the drive ICs 13.
  • the protection cover 20' As already described, proper elasticity is advantageously given to the cover member 22' by making the protection cover 20' of a carbon-containing synthetic resin.
  • the protection coating 18 In order to prevent the cover member 23' of the protection cover 20' from unfavorably affecting the drive ICs 13 due to the elastic deformation, the protection coating 18 should be formed by a hard resin.
  • the cover member 22' of the protection cover 20' is elastically held in close contact with the protection coating 18.
  • FIGS. 7-9 show a thermal printhead according to a third embodiment of the present invention.
  • the constituting elements except a protection cover of the illustrated embodiment are identical to those of the first embodiment. Therefore, the same reference numerals are used and a detailed description is not given.
  • the protection cover 20" of the third embodiment includes a fixation member 21" for fitting engagement to the circumference of a thermal printhead 10 constituted by a supporting member 19 and a head substrate 11 carried thereby, and a cover member 22" extending above the drive ICs 13.
  • the fixation member 21 is made in the form of an elongated rectangular frame, which includes a positioning wall 23" held in direct contact with the entire length of the second longitudinal edge 11b of the head substrate 11, a front engagement wall 25" held in direct contact with the entire length of the longitudinal edge 19a of the supporting member 19, and a pair of side walls 26" connecting corresponding ends of the front engagement wall 25" and the positioning wall 23".
  • the positioning wall 23" is provided with a step portion 24" coming into engagement with the upper surface of the head substrate 11 along the second longitudinal edge 11b of the head substrate 11.
  • the cover member 22" extends forward from the upper end of the positioning wall 23".
  • the protection cover 20" is integrally formed by a suitable resin such as polypropylene or ABS resin containing 5-20% of carbon, so that the cover has a resistance of about 8-12M ⁇ for example.
  • the fixation of the protection cover 20" having the above arrangement is provided by fitting the entirety of the thermal printhead 10 into the frame-shaped fixation member 21", as shown in FIG. 7.
  • the front engagement wall 25" of the fixation member 21" is brought into engagement with the edge 19a of the supporting member 19.
  • the heating resistor 12 on the head substrate 11 is positioned based on the edge 19a.
  • the cover member 22" formed integrally with the fixation member 21” can be accurately positioned relative to the edge 19a of the supporting member 19 and to the heating resistor 12 on the head substrate 11.
  • the positioning wall 23", to which the cover member 22" is directly connected comes into engagement with the second longitudinal edge 11b of the head substrate 11.
  • the cover member 22" is accurately positioned relative to the heating resistor 12 and the platen R.
  • the transferring path of the recording paper P in a printing unit utilizing the thermal printhead 10 is determined by a platen R arranged in facing relation to the heating resistor 12 on the head substrate 11.
  • the position of the platen R is determined so that the platen is brought into exact facing relation to the heating resistor 12 on the head substrate 11.
  • the cover member 22" of the protection cover 20" is disposed at a relatively accurate position relative to the heating resistor 12 on the head substrate 11. Therefore, the cover member 22" is also disposed at a relatively accurate position relative to the platen R in the printing unit. Since the cover member 22" of the protection cover 20" is accurately positioned, the projection amount of the cover member 22" can be rendered as large as possible.
  • the protection cover 20 when made by a carbon-containing synthetic resin, is given electrical conductivity of a proper resistance. In such an instance, since the fixation member 21" of the protection cover 20" is always fitted around the conductive supporting member 19, the static electricity generated at the recording paper is properly conducted to the supporting member 19 via the protection cover 20". As a result, the drive ICs 13 on the head substrate 11 are advantageously prevented from being broken or damaged due to the static electricity, while the protection cover 20" is prevented from unduly causing electrical short.
  • FIG. 10 shows an arrangement of a thermal printhead according to a fourth embodiment of the present invention.
  • the constituting elements of the illustrated embodiment except a protection cover they are identical to those of the first embodiment. Thus, the same reference numerals are used, and a detailed description is not given for them.
  • the protection cover 20"' of the fourth embodiment includes a frame-shaped fixation member 21"' which has a positioning wall 23"' formed with a step portion 24"', a front engagement wall 25"' and a pair of side walls 26"', and a cover member 22"' formed integrally with the fixation member.
  • the cover member 22"' of the protection cover 20"' when mounted on the head substrate 11, is always elastically urged into close contact with the surface of the protection coating 18 enclosing the drive ICs 13.
  • the cover member 22"' of the protection cover 20"' need be rendered elastically deformable, while the height of the cover member 22"' in an original state should be smaller than the height of the protection coating 18 enclosing the drive ICs 13.
  • the cover member 22"' when made of a carbon-containing synthetic resin, is advantageously given suitable elasticity.
  • the protection coating 18 should be made of a hard resin to prevent the drive ICs 13 from being unfavorably affected due to the elastic deformation of the cover member 22"' of the protection cover 20"'.
  • the cover member 22"' of the protection cover 20"' is elastically urged into close contact with the protection coating 18.
  • a transferring error is effectively eliminated by preventing the leading edge of the recording paper P from entering an otherwise present clearance between the cover member 22"' and the protection coating 18.
  • the heating resistor of a thermal printhead may be of a thin film-type other than a thick film-type described above.
  • any protection cover is usable, as far as the positioning relative to the head substrate 11 is performed by the direct contact with the second longitudinal edge 11b of the head substrate 11.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electronic Switches (AREA)
US08/860,971 1995-11-30 1996-11-28 Thermal printhead and protection cover mounted on the same Expired - Fee Related US5791793A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP7312099A JPH09150537A (ja) 1995-11-30 1995-11-30 サーマルプリントヘッドおよびこれに取付ける保護カバー
JP7-312099 1995-11-30
JP31773095A JPH09156145A (ja) 1995-12-06 1995-12-06 サーマルプリントヘッドおよびこれに取付ける保護カバー
JP7-317730 1995-12-06
PCT/JP1996/003499 WO1997019817A1 (fr) 1995-11-30 1996-11-28 Tete d'impression thermique et capot de protection monte sur celle-ci

Publications (1)

Publication Number Publication Date
US5791793A true US5791793A (en) 1998-08-11

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Application Number Title Priority Date Filing Date
US08/860,971 Expired - Fee Related US5791793A (en) 1995-11-30 1996-11-28 Thermal printhead and protection cover mounted on the same

Country Status (7)

Country Link
US (1) US5791793A (zh)
EP (1) EP0806296B1 (zh)
KR (1) KR100244163B1 (zh)
CN (1) CN1074997C (zh)
DE (1) DE69608666T2 (zh)
TW (1) TW335897U (zh)
WO (1) WO1997019817A1 (zh)

Cited By (7)

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US20050212829A1 (en) * 2002-03-21 2005-09-29 Denis Montagutelli Thermal printing head comprising a guide member for the print tape configured as protective cover for a flexible control printed circuit board
US20060280540A1 (en) * 2005-06-10 2006-12-14 Samsung Electronics Co., Ltd. Thermal image forming apparatus
WO2007041718A2 (en) * 2005-10-03 2007-04-12 Intermec Ip Corp. Method and system for protecting a print head in a content applicator and reader
US20100283824A1 (en) * 2009-05-08 2010-11-11 Rohm Co., Ltd. Thermal printhead
US20110316943A1 (en) * 2010-06-29 2011-12-29 Seiko Epson Corporation Liquid ejecting head and liquid ejecting apparatus
US8764164B1 (en) * 2013-01-31 2014-07-01 Hewlett-Packard Development Company, L.P. Printer service station with spittoon plow
US20170182795A1 (en) * 2015-12-25 2017-06-29 Rohm Co., Ltd. Thermal print head

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CN101549796B (zh) * 2008-04-03 2011-05-25 金宝电子工业股份有限公司 滚轮保护装置
JP5385456B2 (ja) * 2010-04-26 2014-01-08 京セラ株式会社 サーマルヘッド

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JPH05162348A (ja) * 1991-12-13 1993-06-29 Aoi Denshi Kk サーマルプリントヘッド
US5568174A (en) * 1993-03-12 1996-10-22 Rohm Co., Ltd. Connector and printer head using the same
US5570123A (en) * 1995-06-30 1996-10-29 Comtec Information Systems, Inc. Thermal print head with auxiliary printer head guard
US5568176A (en) * 1995-07-14 1996-10-22 Samsung Electronics Co., Ltd. Thermal print head and method of making the same

Cited By (15)

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US7365762B2 (en) * 2002-03-21 2008-04-29 Aps Engineering Thermal printing head comprising a printable tape guiding member, in the form of a protection cover for a flexible control printed circuit
US20050212829A1 (en) * 2002-03-21 2005-09-29 Denis Montagutelli Thermal printing head comprising a guide member for the print tape configured as protective cover for a flexible control printed circuit board
US20060280540A1 (en) * 2005-06-10 2006-12-14 Samsung Electronics Co., Ltd. Thermal image forming apparatus
US7542061B2 (en) 2005-06-10 2009-06-02 Samsung Electronics Co., Ltd. Thermal image forming apparatus
US20070103516A1 (en) * 2005-10-03 2007-05-10 Intermec Ip Corp. Method and system for protecting a print head in a content applicator and reader
WO2007041718A3 (en) * 2005-10-03 2007-11-22 Intermec Ip Corp Method and system for protecting a print head in a content applicator and reader
WO2007041718A2 (en) * 2005-10-03 2007-04-12 Intermec Ip Corp. Method and system for protecting a print head in a content applicator and reader
US7594769B2 (en) 2005-10-03 2009-09-29 Intermec Ip Corp. Method and system for protecting a print head in a content applicator and reader
US20100283824A1 (en) * 2009-05-08 2010-11-11 Rohm Co., Ltd. Thermal printhead
US8310511B2 (en) * 2009-05-08 2012-11-13 Rohm Co., Ltd. Thermal printhead
US20110316943A1 (en) * 2010-06-29 2011-12-29 Seiko Epson Corporation Liquid ejecting head and liquid ejecting apparatus
US8764164B1 (en) * 2013-01-31 2014-07-01 Hewlett-Packard Development Company, L.P. Printer service station with spittoon plow
US20170182795A1 (en) * 2015-12-25 2017-06-29 Rohm Co., Ltd. Thermal print head
US9796189B2 (en) * 2015-12-25 2017-10-24 Rohm Co., Ltd. Thermal print head
US10279597B2 (en) 2015-12-25 2019-05-07 Rohm Co., Ltd. Thermal print head

Also Published As

Publication number Publication date
EP0806296B1 (en) 2000-05-31
DE69608666T2 (de) 2001-04-05
CN1169696A (zh) 1998-01-07
EP0806296A4 (en) 1998-02-25
EP0806296A1 (en) 1997-11-12
DE69608666D1 (de) 2000-07-06
WO1997019817A1 (fr) 1997-06-05
KR19980701791A (ko) 1998-06-25
TW335897U (en) 1998-07-01
KR100244163B1 (ko) 2000-03-02
CN1074997C (zh) 2001-11-21

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